Insubstantial is an adjective that means lacking form, substance or nutritional value. If you’re really hungry, a bowl of clear broth will seem pretty insubstantial.

If there is insubstantial evidence to convict an accused criminal, he will be set free. In the office, insubstantial expenses should be paid out of the petty cash draw. A thin blouse is too insubstantial to be worn in this cold weather. And a candy bar makes an insubstantial lunch — a sandwich and fruit would be more nutritious.

Definitions of insubstantial
  1. adjective

    lacking material form or substance; unreal

    insubstantial as a dream”
    insubstantial mirage on the horizon”
    unreal, unsubstantial

    aerial, aeriform, aery, airy, ethereal

    characterized by lightness and insubstantiality; as impalpable or intangible as air
    shadowy, wraithlike

    lacking in substance

    consisting of or containing string or strings
    immaterial, nonmaterial

    not consisting of matter
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    material, real, substantial

    having substance or capable of being treated as fact; not imaginary

    derived from or composed of matter
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  2. adjective

    lacking in nutritive value



    detrimental to physical or moral well-being

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